...Heike Wollmann; Erica Mica; Marco Todesco; Jeff A. Long; Detlef Weigel The ABC model of flower development explains how three classes of homeotic genes confer identity to the four types of floral organs. In Arabidopsis thaliana, APETALA2 ( AP2 ) and AGAMOUS ( AG ) represent A- and C-class genes...

... in trxG and PcG genes can antagonize each other's function, whereas mutations of genes within each group have synergistic effects. Here, we show in Drosophila that multiple trxG and PcG proteins act through the same or juxtaposed sequences in the maintenance element (ME) of the homeotic gene Ultrabithorax...

... of Kansas, Lawrence, KS 66045, USA 7 9 2007 © 2007. 2007 Petal identity Homeotic genes MADS-box genes Poppy Papaver somniferum Nearly all angiosperm flowers possess a perianth, a series of sterile organs that surround the reproductive organs - the stamens and carpels...

...). PcG genes are essential genes in higher eukaryotes responsible for the maintenance of the spatially distinct repression of developmentally important regulators such as the homeotic genes. Their absence, as well as overexpression, causes transformations in the axial organization of the body. Although...

...Concepción Gómez-Mena; Stefan de Folter; Maria Manuela R. Costa; Gerco C. Angenent; Robert Sablowski Floral organs, whose identity is determined by specific combinations of homeotic genes, originate from a group of undifferentiated cells called the floral meristem. In Arabidopsis , the homeotic...

.... * Author for correspondence (e-mail: [email protected] ) 11 11 2002 © 2003. 2003 Drosophila Transcriptional repression and activation Engrailed Hedgehog Wingless signaling Extradenticle Homeotic genes Engrailed (En) comprises a homeodomain that recognizes specific...

...Sylvain Poux; Béatrice Horard; Christian J. A. Sigrist; Vincenzo Pirrotta Polycomb group (PcG) and Trithorax (TRX) complexes assemble at Polycomb response elements (PREs) and maintain respectively the repressed and active state of homeotic genes. Although PcG and TRX complexes are distinct...

.... Biol . 8 , R676 -R678. Bienz, M. ( 1994 ). Homeotic genes and positional signalling in the Drosophila viscera. Trends Genet . 10 , 22 -26. Bienz, M. ( 1997 ). Endoderm induction in Drosophila: the nuclear targets of the inducing signals. Curr. Opin. Genet. Dev . 7 , 683 -688...

... silencing Pleiohomeotic Polycomb complexes Homeotic genes Drosophila Chromatin complexes of Polycomb Group (PcG) proteins maintain the repressed state of homeotic genes in embryonic regions in which they were initially repressed by transient regulators such as Hunchback. The target of PcG...

... 09 08 2000 © 2000 by Company of Biologists 2000 Antirrhinum Flower development Repressors Homeotic genes Ectopic expression Floral organ identity Floral organ identity in Antirrhinum majus is regulated through the combinatorial action of two classes of organ identity...

... homeoprotein may directly regulate the expression of most genes. * Author for correspondence (e-mail: [email protected] ) 08 09 1998 20 10 1998 © 1998 by Company of Biologists 1998 Drosophila melanogaster Homeoproteins Homeotic genes Pair-rule genes Positional...

[email protected] ) 16 07 1998 07 09 1998 © 1998 by Company of Biologists 1998 Apoptosis, Caenorhabditis elegans Homeotic genes Pristionchus pacificus Vulva Ppa-lin-39 In organisms as diverse as vertebrates, insects or nematodes a group of highly conserved Antennapedia...

... of Biologists 1998 Hox homeotic genes abdominal-A pointed odd paired wingless decapentaplegic Ultrabithorax Visceral mesoderm Ets Drosophila Hox genes control anterior-posterior cell fates in multiple tissues of organisms as different as flies, mice and worms (reviewed in McGinnis...

... identity and development. * Author for correspondence (e-mail: [email protected] ) 21 10 1997 08 12 1997 © 1998 by Company of Biologists 1998 Female sterility Homeotic genes Ovule development parthenocarpic fruit Tomato It is well established that fruit set...

...Patrick Motte; Heinz Saedler; Zsuzsanna Schwarz-Sommer ABSTRACT The identity and developmental pattern of the four organ types constituting the flower is governed by three developmental functions, A, B and C, which are defined by homeotic genes and established in two adjacent whorls. In this report...

...Ana Busturia; Christopher D. Wightman; Shigeru Sakonju ABSTRACT Transcriptional silencing by the Polycomb Group of genes maintains the position-specific repression of homeotic genes throughout Drosophila development. The Polycomb Group of genes characterized to date encode chromatinassociated...

... pathway genes, we screened for mutations on loci on the Drosophila second chromosome that interact with the homeotic gene Deformed ( Dfd ). Genetic and molecular tests on the eight genes isolated in the screen place them in three general categories. Two genes appear to encode trithorax group functions...

... Medical Institute, Department of Genetics and Development, Columbia University, 701 West 168th Street, New York, NY 10032, USA 17 03 1997 © 1997 by Company of Biologists 1997 homeotic genes cooperative binding extradenticle pbx mouse Drosophila In Drosophila...

...Bryan T. Rogers; Michael D. Peterson; Thomas C. Kaufman ABSTRACT The products of the HOM/Hox homeotic genes form a set of evolutionarily conserved transcription factors that control elaborate developmental processes and specify cell fates in many metazoans. We examined the expression...

... Hox genes homeotic genes mab-21 Caenorhabditis neurogenesis cell signalling During animal development, pattern-formation mechanisms guide the generation of variant forms of a variety of serially repeated structures, such as segments, rhombomeres, digits or sensory organs. One way...